US1314932A

US1314932A - baker

Info

Publication number: US1314932A
Authority: US
Publication date: 1919-09-02
Anticipated expiration: 1936-09-02

Description

E. K. BAKER.

omounum mm.

APPLICATION FILED MAR. 25. I9I6. A1

Patented bept. 2, 1919.

Y 2 SHEETs-SMEET I- IIIIIII III III

IIIII on the line 3-3 of 85 entlal Section on the sired .EBLEIUING BAKER, OF CHICAGO, ILLINOIS, A-SSIGNOB T0 0F CHICAGO, ILLINOIS, A CORPORATION UNIVERSAL RIM COMPANY,

OF ILLINOISt nnuovm'annn nm.

rying rims therefor. The primary object of lessen the cost thereof. A my invention is to provlde a construction by which the demountable and rims and to rim shall be adapted to be buttoned on to the wheel in the usual manner and still be firmly supported and secured thereon without resort to the use of 'members which act as wedges between the rim and wheel and which inevitably warp and distort the rim to an extent which is perceptible in the wear of the tire.

The general nature of my invention and also the details of the best embodiment thereof which I have thus far devised will be readily understood on reference to the drawings that form part of this specification, and in which: Figure 1 is a side elevation of a motor vehicle wheel fully equipped in accordance with my invention ;-Fig. 2 is a full sized cross section on any of the lines 2-2 of Fig. 1;-Fig. 3 is a similar section Fig. 1;-Fig. 4 is a plan cation, the tire being omitted ;-Fig. 5 is a cross section on the line 5 5 of Fig. 4;- Fig. Y6 is a cross section onthe line 6`6 of Fig. 4;-and Fig. 7 is a vertical circumferline 7-7 of Fig. 4.

`As shown in the drawings, 1 represents the wheel hub ;2, the radial Spokes;-3 the wooden felly;*and, 4 the endless metal felly band or fixed rim within which the felly and spokes are compressed. The fixed rim, 4, is provided with a raised conical flange, iich overhangs the inner side of the Said fixed rim is secured in any suitas by the usual tire bolts shown) and by the shoulders, 6, of the nuts, 7; on the felly.

The demountable rim, 8, may be of any de.- cross section according to the cross section of the tire to be used thereon. In the Specification of Letters Patent. Application led Iarch 25, 1916. Serial No.

Atransplit demountal A lars, due to the fact that ture the studs are utilized as auxiliary sup` 110 Y Patented sept. 2, i919. 86,597.

shown a rim of the now conventional inte ally-Banged straight-side Baker type. e demountable rim is of greater circumference than the fixed rim, 4, and its innermost edge presents a conical surface, 9, which fits the fiange, 5, of the fixed rim. annular space, 10, remains between the two rims.

To secure the demountable rim u'pon the fixed rim, I thrust the demountable rim axidrawings I have 4ally against the fiange, 5, of the fixed rim,

as well shown in F ies. 2, 3, this purpose I provide attached to the outer side of the wheel felly by operating bolts, 12. A may be of the type which present their heads outwardly and have their threaded ends held in the shouldered nuts, 7. plates are substantially rectangular in form and each thereof is characterized by an outer end, 11', which presents a rounded edge, 11",. to the outer flange of the demountle rim. The inner end, 13, of the pressure plate, 11, turns toward the wheel felly, and to prevent its marring the wooden felly there is a metal washer, 14, on the latter. The end, 15, of the washer, 14, provides a step which prevents pressure plate from annoyingly twisting on its bolt when the bolt is rotated to fasten or loosen the pressure plate, 11. As shown in Fig. 1, I prefer that there shall be six bolts, 12, and sin pressure plates 11.

n many and particularly when the rim -is of the en less standard clencher type, .the en ent of the demountable rim upon the singe line of conical contact afforded y the back-flange, 5, provides a support w ich is adequate without the assistance of ot er parts or contacts. But

le rims I necessary and desirable to center the demountable rim upon the fixed rim preparaally upon the back-flange, 5, of the fixed rim; otherwise the perpendicularity of the rim to the wheel axis .is not insured. For this purpose I provide centering studs between the two rims. the functions of the similar studs described in my Patent No. 1,095,953. he structures, however, differ in several important particuin the present struceven in such d practically always in the case of ,h

find it both pressing the demountable rim axiese perform some of ports for the rim and are not required to correct that distortion of the rim mentioned in said patent and caused by the former associa-tion of wedge lugs therewith.

The studs which I employ in the present case are of two kinds. The greater number thereof are fixed on and project outwardly from vthe fixed rim, 4, near the' outer edge (near the outer edge thereof. The lesser number are provided' on the inner periphery of the demountable rim thereof) and in a group diametrically opposite the valw'e stem hole in the demountable rim.

Of the first mentioned studs there are preferably nine, where six pressure plates are used. These studs are marked, 16, and, as shown in Fig. 2, are preferably made by striking up portions of the metal composing the fixed rim. The outer ends or tops, 16 of these studs are preferably substantially fiat; the stlds being truncated cones. They are of Such height as to support the rim in cross sectionally parallel position with respect to the fixed rim, may be somewhat lower when the diameter of the wheel is large. I prefer that there shallbe one such stud. 16, back of each pressure plate. The other studs, 16, are preferably arranged midway between the pressure plate positlons.

The tire, T, has a valve stem, V, which extends through a hole, 17, in the rim and through a hole, 18, in the fixed rim and felly. As usual, the valve stem marksvthe pivoting or hinging point of the demountable rim; in other words, the point on which the rim swings with respect to the wheel during the operation lof the buttoning-on and unbuttonin the rim. i

iametrically o hole, 17, I provi e the demountable rim with one or more fixed studs, 19, of. the sec-f ond kind ment1oned. These studs," 19, may

be round headed rivets applied 'to ,the .inner periphery of the rim,e8, as best shown in Fig. 3. The omission of studs, 16, upon part of the fixed rim which opposite the valve stem aifordsgthe clearance which is necessary to allow thegmrim to button into position on'the wheel; orthe other hand, when the rim is thus positioned studs, 19, eff which there are preferably three, as shown, button into place on the periphery of the fixed rim, 4, and therefore aid m'centering the rim on the .wheel and also support that'part of the rim inv parallelism with the fixed rim, i'n the manner hefore explained as to the stud, 16. I

To adapt this form of support to transpiit 'demountable rims I makey two important changes in the former construction of such rims. The first consists in providing means for positively and non-adjustably, but detachably, tying together they rim ends upon a circumferential line which substantially isl diametrically 4; though they 0 the back-flange, which action causes said osite the valve stem the outer flange of the 7The fixed rim, 4,

rear flange of the demountable rim. By so is held against expansion b the thrust of the vrim against the conical ange,v 5, and at the same time the outer edge of the rim is 7 left free to be contractedv by the force of the pneumatic tire. Such compression and contraction results in forcibly and securely seating the demountable rim u on the centering and supporting studs, edge of the rim is left free to be expanded, as by a tool inserted in the outer end of the split in the rim, an operation which facili tates the unbottoning of the rim when the tire is .deiiated The .second important g change consists in transversely slotting the fixed rim in such manner that the rim-end connecting and driving studs need not at first be fully en aged with the fixed rim. This results in al owing the valve ystem por-' tion of thel rim to be held outwardly until the opposite side of the rim has been butv toned over the wheel after which said valve stem portion may be forced inwardly against studs to fully engage My purpose, in this, is b utton on with less clearance over rim.

These portionsy of Cthe structure are best 9 shown in Figs. 4, 5, and 6; wherein 20 represents a compromise diagonal transverse cut or split by which the rim ends, 8 and 8*,1are made self-alining. This self-alinin with the fixed rim. to allow the rim to the fixed feature of the rim is not specifically claime 1 in this application, Dbut is both -shown and described in my companion application yof even date herewith, to-wit` Serial No. 86,598. The diagonal split shown in Fig. 4 further differs from others in .the provision of a .1 constantly open notch, 21, in the outer edge of the rim,\8, between the ends of the rim.

I prefer that the side walls ofthe notch, 21, shall be madelby perpendicular 4cuts in the edge. of the rim, 8. Thus formed,the notch i readily admits the wedge point, 22, of a screw driver orlike tool, by means of which the 'ends of the rim may be pried apart to expand or circumferentially distend the the rim, .8, for the purpose 1 above mentioned. The valve stem hole` 17, is positioned close to the split, 20, and each side thereof, z', e., on each rim-end, 8, 8", I provide ai im-end-connecting-and-driving stud, 23. These two studs are most conl veniently shouldered against the inner periphery of the rimand arev riveted in the body portion thereof, as shown in Fig. 5. contains corresponding slots, 24, positioned to vreceive the two driv. 1 ing studs, 23,- 23. I prefer that` the slots shall be transversely elongated and partly formed in the outstanding flange, 5, of the rim. Upon each stud I form a hook-shaped endor shoulder, 25, adapted to hook under l the overhanging part of the flange, 5, when the demountable rim is fully` positioned on the wheel. The slots, 2l, are of such transverse length that the end connecting and drivin studs, 23, may be dropped imo the same efore the edge of the demountable rim engages the back-flange, 5. 'lhe valve stem yields in the rim sufficiently' to allow this action when valve stem hole, 18, in the'felly. After the opposite side of the rim has been buttoned over the wheehthe rim as a whole is pushed axially thereon and thus the hooks, .25, of the studs, 23, are engaged with the fixed rim (see Fig. 5). When thus engaged the studs and the fixed rim jointly tie the rim ends together and to the fixed rim, substantially in the plane of the inner flange of the den'iountable rim. Obviously the studs prevent circumferential movement of the demountable rim on the wheel and obviously thehooks upon the studs also prevent radial movement or distention of the rim-ends with respect to the body of the wheel. Thereore, when once positioned on the fixed rim t e demountable rim is securely held against her disalinement thereon or dislodgmcnt therefrom until the demountable rim is intentionally unbuttoned from the wheel.

y' preference, I arrange one of the pressure'plates, 11, so that it overlaps the split in the rim, thus further supporting the rim ends, 8, and 8". As shown by dotted lines in Fig. 4, one of the centering` and supporting studs, 16, is arranged directly beneath the split in the rim to additionally1 support the rim ends. v

In most cases the demountable transplit rim may be buttoned and unbuttoned on the wheel Without anyattention being given to the circumference of the outer edge of the rim, but` whenever the operation is found to be too difficult the difficulty can quickly be remedied by expanding the outer flange ot' the rim, as by means of the tool, 22, placed in the notch, 21.

As various modifications of my invention will readily suggest themselves to one who is skilled the invention to the precise construction herein shown and descri except as specifically set frth in the appended claims.

Havlng thus described my invention, I claim as new and desire to secure by Letters Patent 1. A motor vehicle wheel having a substantially conical back-flange, in combination with lan integrally flanged transplit demountable rim of reater dlameter than the wheel and formedg for single line conical contact with said back-flange thereof, means tying the rim-ends together and to the wheel substantially in the plane of the inner side flange of the rim,and a plurality of pressure plates and bolts on the outer side of it is first dropped into theV )acent the outer edge of the studs circumferentially the wheel, adapted to exert axial pressure against the o ter side flange of said lrim and tio hold the inner side thereof on said backf amro.

2.bA motor vehicle wheel having a substantially conical back-flange, in combination with an integrally flanged transplit demountable rim of greater diameter than the wheel and formed for .single line conical contact with said backfflange thereof, a plurality of pressure plates and bolts therefor on the outer side of the wheel, for engagement with the outer flange of said rim, and fixed rim centering-and-supporting studs circumferentially spaced in the annular opening between the wheel and rim and adwheel.

motor vehicle wheel having a fixed rim formed with a back-flange and provided with a vah'e stem hole, in combination with an integrally flanged transplit demountable rim of greater diameter than the wheel and having its inner edge engaged with said back-flange thereof, axial pressure means on the outer side of the wheel and pressing against the outer flange of said demountable rim, a plurality of centering and supporting spaced on said fixed rim near the outer edge thereof, and a plurality of similar studs on said demountable rim and engaged with said fixed rim at? points diametrically opposite the valve stem hole therein.

4. A motor vehicle wheel stantially conical back-flange, 1n combination with an integrally flanged transplit demountable rim of greater diameter than the wheel and formed for single line of conical contact with said back-flange thereof, means tying the rim-ends together and to the wheel substantially in the plane of the inner side flange of the rim, aV lurality of pressure plates and bolts there or on the outer side of the wheel, adapted to exert axial pressure against the outer side flange of said rim, and fixed rim-centering-and-supporting studs circumferentially spaced in the annular space between the wheel and rim.

5. A motor vehicle wheel having a Vsubstantially conical back-flange and a valvestem hole, in combination with an integrally flanged transplit demountable rim of greater diameter than the wheel and formed for single line conical contact with said backflange thereof, .means tying the rim ends together and `to the wheel substantially in the plane of the inner side flange of the rim, a plurality of pressure plates and bolts on the outer side of the Wheel, adapted to eX- ert axial pressure against the outer side flange of said rim, rim-centering-and-supporting studs circumferentially spaced and fixed on the inner periphery ofsaid rim opposite the Vvalve stem position a'nd similar studs circumferentially spaced and fixed on having a subl` l' the periphery of the wheel on each side of the valve stem hole therein, substantially asand for the purpose speci ed.

6. A motor-vehicle-Wheel elly band, having a circumferential and substantially conical back-flange and provided with a valve stem hole and with transversely elongated driving stud holes, 'the latter being positioned on opposite sides of said valve stem hole, and extendi into but not through said back-flange, su tantially as and or the purpose speeiiied.

ixed rim, orl

opposite sides of saidva 7. A 1ndtor-vehiclewheel iiXed rim `or felly band having a circumferential and substantially conical back-flange and provided 15 with a valve stem hole and with two driving stud holes, the latter being positioned at lve stem hole, butnearer to said back flange than to the front edge of said'felly band, substantially as and 20 RLE KING BAKER.